CN101329106A - The Technology and Process of Making Sanitary Hot Water Using the Condensation Heat of Air Conditioner and Auxiliary Heat Source - Google Patents
The Technology and Process of Making Sanitary Hot Water Using the Condensation Heat of Air Conditioner and Auxiliary Heat Source Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000009833 condensation Methods 0.000 title claims abstract description 31
- 230000005494 condensation Effects 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 39
- 238000004378 air conditioning Methods 0.000 claims abstract description 32
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 238000005338 heat storage Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
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- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
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- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Abstract
一种利用空调机冷凝热与辅助热源制备卫生热水的技术与工艺。在空调机组的冷凝器处并联一辅助加热与蓄热水箱系统。该系统由辅助热源、蓄热水箱等与自动控制系统并联组成。自动控制系统由冷却水温度控制系统，冷却水补水控制系统，热水温度控制系统并联组成。冷却水温度控制系统由温度传感器、温度控制器和电动三通阀串联组成；冷却水补水控制系统由流量传感器、流量控制器和补水电动阀串联组成；热水温度控制系统由温度传感器、温度控制器和电磁阀串联组成。本发明可以提高空调机组的运行效率、增强空调机组的稳定性；实现空调机组冷凝热的部分或全部回收和冷凝热回收量同热水负荷的匹配。
A technology and process for preparing sanitary hot water by utilizing the condensation heat of an air conditioner and an auxiliary heat source. An auxiliary heating and storage tank system is connected in parallel at the condenser of the air conditioning unit. The system consists of an auxiliary heat source, a heat storage tank, etc. connected in parallel with an automatic control system. The automatic control system consists of a cooling water temperature control system, a cooling water replenishment control system, and a hot water temperature control system connected in parallel. The cooling water temperature control system consists of a temperature sensor, a temperature controller and an electric three-way valve in series; the cooling water replenishment control system consists of a flow sensor, a flow controller and a water replenishment electric valve in series; the hot water temperature control system consists of a temperature sensor, a temperature The device and the solenoid valve are connected in series. The invention can improve the operating efficiency of the air-conditioning unit, enhance the stability of the air-conditioning unit, and realize the partial or complete recovery of the condensation heat of the air-conditioning unit and the matching of the recovery amount of the condensation heat and the hot water load.
Description
所属技术领域Technical field
本发明涉及一种利用空调机冷凝热与辅助热源制备卫生热水的技术与工艺，属于节能技术领域；主要针对大型宾馆、医院等有卫生热水需求的公共建筑的中央空调系统的冷凝热回收和利用，用于制备卫生热水。The invention relates to a technology and process for preparing sanitary hot water by utilizing the condensation heat of an air conditioner and an auxiliary heat source, which belongs to the field of energy-saving technology; it is mainly aimed at the recovery of condensation heat of central air-conditioning systems in large hotels, hospitals and other public buildings that require sanitary hot water And use, for the preparation of sanitary hot water.
背景技术Background technique
目前，空调机组的冷凝热回收技术主要有两种：一种采用在压缩机与冷凝器之间串联一热回收换热器，自来水进入热回收换热器吸收压缩机出口高温冷剂蒸气的显热，然后进入辅助热源或作为热泵机组的低温热源制备卫生热水，实现冷凝热的部分回收；一种采用省却冷却塔，以空调制冷机组的全部冷却水作为热泵机组的低温热源制备卫生热水，实现冷凝热的全部回收。在实际工程中，前者由于在压缩机与冷凝器之间串联热回收换热器，导致压缩机的结构复杂，冷剂管道的阻力损失增加，严重影响空调机组运行的稳定性和运行效率。后者难以实现冷凝热的回收量和热水负荷的匹配，并且由于省却冷却塔，不能保证空调系统的运行效率和稳定性。由于以上两种空调机组冷凝热回收技术的局限性，所以其在实际工程中难以大规模的推广和应用。绝大多数空调机组的冷凝热通过冷却塔与环境进行热交换散失到环境中，造成能源的浪费和环境的污染。At present, there are two main condensation heat recovery technologies for air-conditioning units: one uses a heat recovery heat exchanger connected in series between the compressor and the condenser, and tap water enters the heat recovery heat exchanger to absorb the apparent high-temperature refrigerant vapor at the outlet of the compressor. Then enter the auxiliary heat source or use it as the low-temperature heat source of the heat pump unit to prepare sanitary hot water to realize partial recovery of condensation heat; one uses the cooling tower and uses all the cooling water of the air-conditioning refrigeration unit as the low-temperature heat source of the heat pump unit to prepare sanitary hot water , to achieve full recovery of condensation heat. In actual engineering, due to the heat recovery heat exchanger connected in series between the compressor and the condenser in the former, the structure of the compressor is complicated, and the resistance loss of the refrigerant pipeline increases, which seriously affects the stability and efficiency of the air conditioning unit. The latter is difficult to achieve the matching of the recovery of condensation heat and the hot water load, and because the cooling tower is omitted, the operating efficiency and stability of the air conditioning system cannot be guaranteed. Due to the limitations of the above two condensation heat recovery technologies of air-conditioning units, it is difficult to promote and apply them on a large scale in actual projects. The condensation heat of most air-conditioning units is lost to the environment through the heat exchange between the cooling tower and the environment, resulting in energy waste and environmental pollution.
发明内容Contents of the invention
为了克服现有冷凝热回收技术所引起的空调机组运行效率低、稳定性差以及冷凝热的回收量和热水负荷的不匹配等问题，本发明提出了一种利用空调机冷凝热与辅助热源制备卫生热水的技术与工艺，提高了空调机组的运行效率、增强了空调机组的稳定性；实现了空调机组冷凝热的部分或全部回收和冷凝热回收量同热水负荷的匹配。In order to overcome the problems of low operating efficiency and poor stability of the air-conditioning unit caused by the existing condensation heat recovery technology, as well as the mismatch between the recovery of condensation heat and the hot water load, the present invention proposes a method of using the condensation heat of the air conditioner and auxiliary heat source to prepare The technology and process of sanitary hot water improves the operating efficiency and stability of the air-conditioning unit; realizes the partial or complete recovery of the condensation heat of the air-conditioning unit and the matching of the recovery of condensation heat with the hot water load.
本发明解决其技术问题所采用的技术方案是：在空调机组的冷凝器处并联一辅助加热与蓄热水箱系统。该系统由辅助热源、蓄热水箱等与自动控制系统并联组成。自动控制系统由冷却水温度控制系统，冷却水补水控制系统，热水温度控制系统并联组成。冷却水温度控制系统由温度传感器、温度控制器和电动三通阀串联组成；冷却水补水控制系统由流量传感器、流量控制器和补水电动阀串联组成；热水温度控制系统由温度传感器、温度控制器和电磁阀串联组成。冷却水温度控制系统的控制策略：当冷却水温度大于45℃时，温度传感器控制温度控制器使电动三通阀动作，空调系统的冷却水直接进入蓄热水箱，供用户使用；当冷却水温度小于45℃时温度传感器控制温度控制器使电动三通阀动作，空调系统的冷却水直接进入辅助热源，经加热后达到50℃左右，然后进入蓄热水箱，供用户使用。冷却水补水控制系统的控制策略：通过安装在辅助加热与蓄热水箱系统的冷却水入口处的流量传感器控制流量控制器使补水电动阀动作，调整补水电动阀的开度，调节冷却水的补水量。热水温度控制系统的控制策略：通过安装在蓄热水箱处的温度传感器控制温度控制器使电磁阀动作，当供水管处的水温低于40℃时，电磁阀开启，循环水泵启动，将热水打入辅助热源进行再加热，以满足用户的要求。在夏季，空调机组的冷却水(一般为40℃左右)分为两路。一路进入辅助加热与蓄热水箱系统，制备卫生热水；另一路进入冷却塔，经冷却后循环使用。冬季和过度季，通过辅助热源加热自来水，制备卫生热水。从而达到提高了空调机组的运行效率、增强了空调机组的稳定性，实现空调机组冷凝热的部分或全部回收以及冷凝热回收量同热水负荷的匹配。The technical scheme adopted by the present invention to solve the technical problem is: an auxiliary heating and heat storage tank system is connected in parallel at the condenser of the air-conditioning unit. The system consists of an auxiliary heat source, a heat storage tank, etc. connected in parallel with an automatic control system. The automatic control system consists of a cooling water temperature control system, a cooling water replenishment control system, and a hot water temperature control system connected in parallel. The cooling water temperature control system consists of a temperature sensor, a temperature controller and an electric three-way valve in series; the cooling water replenishment control system consists of a flow sensor, a flow controller and a water replenishment electric valve in series; the hot water temperature control system consists of a temperature sensor, a temperature The device and the solenoid valve are connected in series. The control strategy of the cooling water temperature control system: when the cooling water temperature is higher than 45°C, the temperature sensor controls the temperature controller to make the electric three-way valve act, and the cooling water of the air conditioning system directly enters the heat storage tank for the user; when the cooling water When the temperature is lower than 45°C, the temperature sensor controls the temperature controller to activate the electric three-way valve, and the cooling water of the air conditioning system directly enters the auxiliary heat source, reaches about 50°C after heating, and then enters the hot water storage tank for users. The control strategy of the cooling water replenishment control system: through the flow sensor installed at the cooling water inlet of the auxiliary heating and hot water storage tank system, the flow controller is controlled to make the water replenishment electric valve act, adjust the opening degree of the water replenishment electric valve, and adjust the flow rate of the cooling water. Hydration volume. The control strategy of the hot water temperature control system: the temperature sensor installed at the hot water storage tank is used to control the temperature controller to activate the solenoid valve. When the water temperature at the water supply pipe is lower than 40°C, the solenoid valve is opened and the circulating water pump is started. The hot water enters the auxiliary heat source for reheating to meet the user's requirements. In summer, the cooling water (generally around 40°C) of the air conditioning unit is divided into two paths. One way enters the auxiliary heating and hot water storage tank system to prepare sanitary hot water; the other way enters the cooling tower for recycling after cooling. In winter and transitional seasons, the tap water is heated by an auxiliary heat source to prepare sanitary hot water. In this way, the operating efficiency of the air conditioning unit is improved, the stability of the air conditioning unit is enhanced, partial or complete recovery of the condensation heat of the air conditioning unit is realized, and the matching of the recovered condensation heat with the hot water load is realized.
本发明的有益效果是，节能、环保，实现了能量的梯级利用，并减少冷却塔冷却水蒸发量；热回收效率高，当废热不足时可以采用辅助热源加热，保证卫生热水的供应，实现了空调机组冷凝热的部分或全部回收；运行安全、稳定，自动化控制程度高；工艺简单、易于实现，无需改变空调机组的内部构造；辅助热源可以采用燃气、燃油锅炉或电加热器等形式，实现方式灵活多样；节能效果显著，一般可以节能30％-60％，夏季平均节能50％。在实际工程中，本发明拥有广阔的推广和应用前景。The beneficial effects of the present invention are energy saving, environmental protection, cascade utilization of energy is realized, and cooling tower cooling water evaporation is reduced; heat recovery efficiency is high, when waste heat is insufficient, an auxiliary heat source can be used for heating, ensuring the supply of sanitary hot water, realizing It can recover part or all of the condensation heat of the air conditioning unit; the operation is safe and stable, and the degree of automatic control is high; the process is simple and easy to realize, without changing the internal structure of the air conditioning unit; the auxiliary heat source can be in the form of gas, oil-fired boiler or electric heater, etc. The implementation methods are flexible and diverse; the energy saving effect is remarkable, generally 30%-60% can be saved, and the average energy saving in summer is 50%. In actual engineering, the invention has broad promotion and application prospects.
附图说明Description of drawings
下面结合附图对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings.
图1：利用空调机冷凝热与辅助热源制备卫生热水的技术与工艺的原理图Figure 1: Schematic diagram of the technology and process for preparing sanitary hot water by using the condensation heat of the air conditioner and the auxiliary heat source
图2：夏季，利用空调机冷凝热与辅助热源制备卫生热水的技术与工艺的运行原理图Figure 2: In summer, the operation principle diagram of the technology and process of using the condensation heat of the air conditioner and the auxiliary heat source to prepare sanitary hot water
图3：冬季、过渡季利用空调机冷凝热与辅助热源制备卫生热水的技术与工艺的运行原理图Figure 3: Schematic diagram of the technology and process for preparing sanitary hot water using the condensation heat of air conditioners and auxiliary heat sources in winter and transitional seasons
图1中，1.来自于空调机组的冷冻水，2.冷凝器，3.冷却水泵，4.补水电动阀，5.冷却塔，6.温度传感器，7.温度控制器，8.流量传感器，9.流量控制器，10.电动三通阀，11.补水阀，12.辅助热源，13.止回阀，14.蓄热水箱，15.热水供应系统的循环水泵，16.用户，17.温度传感器，18.温度控制器，19.电磁阀，20.循环水泵。In Figure 1, 1. Chilled water from the air conditioning unit, 2. Condenser, 3. Cooling water pump, 4. Water supply electric valve, 5. Cooling tower, 6. Temperature sensor, 7. Temperature controller, 8. Flow sensor , 9. Flow controller, 10. Electric three-way valve, 11. Water supply valve, 12. Auxiliary heat source, 13. Check valve, 14. Heat storage tank, 15. Circulating water pump of hot water supply system, 16. User , 17. Temperature sensor, 18. Temperature controller, 19. Solenoid valve, 20. Circulating water pump.
图中“
具体实施方式Detailed ways
在图1中，温度传感器(6)、温度控制器(7)和电动三通阀(10)串联构成冷却水温度控制系统；流量传感器(8)、流量控制器(9)和补水电动阀(4)串联构成冷却水补水控制系统；温度传感器(17)、温度控制器(18)、电磁阀(19)和循环水泵(20)串联构成热水温度控制系统。通过以上控制系统的调节实现空调机组的运行效率的提高、空调机组的稳定性的增强和空调机组冷凝热的部分或全部回收和冷凝热回收量同热水负荷的匹配。In Fig. 1, the temperature sensor (6), the temperature controller (7) and the electric three-way valve (10) are connected in series to form the cooling water temperature control system; the flow sensor (8), the flow controller (9) and the water supply electric valve ( 4) A cooling water replenishment control system is formed in series; a temperature sensor (17), a temperature controller (18), a solenoid valve (19) and a circulating water pump (20) are connected in series to form a hot water temperature control system. The improvement of the operating efficiency of the air conditioning unit, the enhancement of the stability of the air conditioning unit, the recovery of part or all of the condensation heat of the air conditioning unit and the matching of the recovery of condensation heat with the hot water load can be achieved through the adjustment of the above control system.
图2，在夏季，空调制冷机组的冷却水(一般为37℃左右)，分为两个支路：一路进入辅助加热与蓄热水箱系统，制备卫生热水。其具体实现方式是：当冷却水温度小于45℃时，直接进入辅助热源(12)，经加热后达到50℃左右，然后进入蓄热水箱(14)，供用户(16)使用；当冷却水温度大于45℃时，直接进入蓄热水箱(14)，供用户(16)使用；另一路进入冷却塔(5)冷却至32℃左右，后经冷却水泵(3)进入冷凝器(2)完成冷却水循环。Figure 2. In summer, the cooling water of the air-conditioning refrigeration unit (generally around 37°C) is divided into two branches: one path enters the auxiliary heating and heat storage tank system to prepare sanitary hot water. The specific implementation method is: when the cooling water temperature is lower than 45°C, it directly enters the auxiliary heat source (12), reaches about 50°C after being heated, and then enters the heat storage tank (14) for use by the user (16); When the water temperature is greater than 45°C, it directly enters the heat storage tank (14) for use by the user (16); the other way enters the cooling tower (5) to cool to about 32°C, and then enters the condenser (2) through the cooling water pump (3). ) to complete the cooling water cycle.
图3，在过渡季和冬季，空调机组停止运行，此时开启补水阀(11)，自来水进入辅助热源(12)，经加热后达到50℃左右，进入蓄热水箱(14)供用户(16)使用。Fig. 3, in the transitional season and winter, when the air conditioning unit stops running, the water replenishment valve (11) is opened at this time, and the tap water enters the auxiliary heat source (12), reaches about 50°C after being heated, and enters the heat storage tank (14) for the user ( 16) use.
控制策略的实施方式How to implement the control strategy
1.在辅助加热与蓄热水箱系统的冷却水入口处安装温度传感器(6)、温度控制器(7)和电动三通阀(10)。由温度传感器(6)控制温度控制器(7)使电动三通阀(10)动作：当冷却水温度大于45℃时，空调系统的冷却水直接进入蓄热水箱(14)供用户(16)使用；当冷却水温度小于45℃时，空调系统的冷却水直接进入辅助热源(12)，经加热后达到50℃左右，然后进入蓄热水箱(14)，供用户(16)使用。1. Install a temperature sensor (6), a temperature controller (7) and an electric three-way valve (10) at the cooling water inlet of the auxiliary heating and storage tank system. The temperature sensor (6) controls the temperature controller (7) to activate the electric three-way valve (10): when the cooling water temperature is higher than 45°C, the cooling water of the air conditioning system directly enters the heat storage tank (14) for the user (16 ) use; when the cooling water temperature is less than 45°C, the cooling water of the air conditioning system directly enters the auxiliary heat source (12), reaches about 50°C after being heated, and then enters the heat storage tank (14) for use by the user (16).
2.在冷却水循环管路上安装补水电动阀(4)，在辅助加热与蓄热水箱系统的冷却水入口处安装流量传感器(8)和流量控制器(9)。由流量传感器(8)控制流量控制器(9)使补水电动阀(4)动作：根据流量传感器(8)所测得的进入辅助加热与蓄热水箱系统的冷却水量，调整补水电动阀(4)的开度，从而调节冷却水的补水量，实现机组的稳定运行。2. Install the water supply electric valve (4) on the cooling water circulation pipeline, and install the flow sensor (8) and the flow controller (9) at the cooling water inlet of the auxiliary heating and heat storage tank system. The flow controller (9) is controlled by the flow sensor (8) to make the water supply electric valve (4) act: according to the cooling water flow into the auxiliary heating and storage tank system measured by the flow sensor (8), adjust the water supply electric valve ( 4) to adjust the water supply of cooling water and realize the stable operation of the unit.
3.在蓄热水箱(14)处设置温度传感器(17)、温度控制器(18)、电磁阀(19)和循环水泵(20)。由温度传感器(17)控制温度控制器(18)使电磁阀(19)动作以及循环水泵(20)的开启：当供水管处的水温低于40℃时，电磁阀(19)开启，循环水泵(20)启动，将热水打入辅助热源(12)进行再加热，以满足用户(16)的要求。3. A temperature sensor (17), a temperature controller (18), a solenoid valve (19) and a circulating water pump (20) are arranged at the heat storage tank (14). The temperature sensor (17) controls the temperature controller (18) to activate the solenoid valve (19) and the circulating water pump (20): when the water temperature at the water supply pipe is lower than 40°C, the solenoid valve (19) is opened, and the circulating water pump (20) start, pour hot water into the auxiliary heat source (12) for reheating, to meet the requirements of the user (16).
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| CN101329106A true CN101329106A (en) | 2008-12-24 |
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| CNA2007100167508A Pending CN101329106A (en) | 2007-08-03 | 2007-08-03 | The Technology and Process of Making Sanitary Hot Water Using the Condensation Heat of Air Conditioner and Auxiliary Heat Source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766337A (en) * | 2017-01-23 | 2017-05-31 | 苏州苏净安发空调有限公司 | A kind of circulated air air-conditioning heat pump energy conserving system |
| CN107366951A (en) * | 2017-08-18 | 2017-11-21 | 南京长江都市建筑设计股份有限公司 | A kind of air conditioner cold water unit reclaiming system for condensation heat |
| CN108759172A (en) * | 2018-04-09 | 2018-11-06 | 中原工学院 | A kind of heat storage heat pump system and its operation method based on cooling water heat recycling |
| CN109883056A (en) * | 2019-01-09 | 2019-06-14 | 青岛海尔空调器有限总公司 | A kind of control method of energy system |
| CN110238006A (en) * | 2019-06-29 | 2019-09-17 | 广东达诚技术股份有限公司 | Sheet material is coated with dryer hand automatic temperature-adjusting control system |
| CN113503638A (en) * | 2021-06-18 | 2021-10-15 | 南京以禾电子科技有限公司 | Self-adaptive fuel oil heater for high plain |
| CN114110815A (en) * | 2021-12-02 | 2022-03-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system, control method and device thereof, air conditioning equipment and storage medium |
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2007
- 2007-08-03 CN CNA2007100167508A patent/CN101329106A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766337A (en) * | 2017-01-23 | 2017-05-31 | 苏州苏净安发空调有限公司 | A kind of circulated air air-conditioning heat pump energy conserving system |
| CN107366951A (en) * | 2017-08-18 | 2017-11-21 | 南京长江都市建筑设计股份有限公司 | A kind of air conditioner cold water unit reclaiming system for condensation heat |
| CN108759172A (en) * | 2018-04-09 | 2018-11-06 | 中原工学院 | A kind of heat storage heat pump system and its operation method based on cooling water heat recycling |
| CN109883056A (en) * | 2019-01-09 | 2019-06-14 | 青岛海尔空调器有限总公司 | A kind of control method of energy system |
| CN109883056B (en) * | 2019-01-09 | 2021-06-25 | 青岛海尔空调器有限总公司 | A kind of control method of energy system |
| CN110238006A (en) * | 2019-06-29 | 2019-09-17 | 广东达诚技术股份有限公司 | Sheet material is coated with dryer hand automatic temperature-adjusting control system |
| CN113503638A (en) * | 2021-06-18 | 2021-10-15 | 南京以禾电子科技有限公司 | Self-adaptive fuel oil heater for high plain |
| CN114110815A (en) * | 2021-12-02 | 2022-03-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system, control method and device thereof, air conditioning equipment and storage medium |
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Open date: 20081224 |